Question

A force of 5 kg weight act on a body for 10sec . if the velocity varies at 5m/s due to force the mass of the body is

Answer 1

We know that 
Change in velocity(dv)=F*dt/m
. =16*2/4
. =8 m/s
therefore change in velocity =8m/s

Answer 2

As 1kg.wt =9.8 N

so,5 kg.wt = 49 N

formula ;

f=mv/t

49=m.5/10

m=49×10/5

m= 98kg

ANS .= 98 kg